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Virtual histology intravascular ultrasound analysis of non-culprit attenuated plaques detected by grayscale intravascular ultrasound in patients with acute coronary syndromes.

Authors
Wu, X; Maehara, A; Mintz, GS; Kubo, T; Xu, K; Choi, SY; He, Y; Guo, N; Moses, JW; Leon, MB; De Bruyne, B; Serruys, PW; Stone, GW
Citation
The American journal of cardiology, 105(1):48-53, 2010
Journal Title
The American journal of cardiology
ISSN
0002-91491879-1913
Abstract
Noncalcific attenuated plaques identified by grayscale intravascular ultrasound (IVUS) are often seen in patients with acute coronary syndromes and have been associated with no reflow and creatine kinase-MB elevation after percutaneous coronary intervention. Histopathology has shown cholesterol clefts, microcalcification, or organized thrombus. One hundred twenty-four vessels in 64 patients with acute coronary syndromes from the PROSPECT trial were identified for inclusion in the present analysis. After excluding 4 vessels with severe calcification, 9 vessels with <40% plaque burden, and 3 vessels with too few (<3) virtual histology (VH)-IVUS frames for analysis, complete grayscale IVUS and VH-IVUS was available for 108 vessels in 64 patients that contained 39 VH-IVUS thin-capped fibroatheromas (VH-TCFA), 40 thick-capped fibroatheromas (VH-ThFA), and 33 pathologic intimal thickening but no fibrotic or fibrocalcific plaques. Overall, there were 47 grayscale IVUS attenuated plaques in 43 vessels. Compared to the minimum luminal sites of the remaining 65 vessels (controls), attenuated plaques contained larger necrotic core areas (1.5 +/- 0.9 vs 0.9 +/- 0.8 mm(2) in controls, p = 0.001). Fibroatheromas (VH-TCFA or VH-ThFA) were more common at the sites of attenuated plaques than at control sites (VH-TCFA 42.5% vs 29.2%, VH-ThFA 53.2% vs 23.1%, pathologic intimal thickening 4.3% vs 47.7%, p <0.0001). In conclusion, grayscale IVUS attenuated plaques are associated with a large amount of VH-IVUS necrotic core and are markers of the presence of fibroatheromas (VH-TCFA or VH-ThFA). This may explain the biologic instability of these lesions.
MeSH terms
Acute Coronary Syndrome/pathology/physiopathology/*ultrasonography*Computer SimulationCoronary Vessels/*pathology/ultrasonographyDiagnosis, DifferentialDisease ProgressionElectrocardiographyFemaleFollow-Up StudiesHumansMaleMiddle AgedPrognosisProspective StudiesReproducibility of ResultsUltrasonography, Interventional/*methods
DOI
10.1016/j.amjcard.2009.08.649
PMID
20102889
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Cardiology
AJOU Authors
최, 소연
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